{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{11}{D{.}{.}{-1}}}
\toprule
            &\multicolumn{5}{c}{Variable cost specification}&\multicolumn{4}{c}{Model specification} &\multicolumn{2}{c}{IV} \\ \cmidrule(lr){2-6} \cmidrule(lr){7-10} \cmidrule(lr){11-12} \\
            &\multicolumn{1}{c}{(KM)}&\multicolumn{1}{c}{(Low)}&\multicolumn{1}{c}{(High)}&\multicolumn{1}{c}{(Short)}&\multicolumn{1}{c}{(Long)}&\multicolumn{1}{c}{(Rand)}&\multicolumn{1}{c}{(H / W)}&\multicolumn{1}{c}{(Nb. draws)}&\multicolumn{1}{c}{(S-S-Halton)}&\multicolumn{1}{c}{(No wage)}&\multicolumn{1}{c}{(Indic.)}\\
\midrule
Price (TCHF) ($\alpha_i$) & -0.0801***     & -0.0808***   & -0.0810***       &  -0.0815***  & -0.0808***  & -0.0801***  & -0.0765*** &  -0.0801***   & -0.0897***     &  -0.1177***  &  -0.1023***\\
            &      (0.004)   &      (0.004)   &      (0.004)   &   (0.004)      &    (0.004)  &  (0.004) &  (0.004)  & (0.004)    & (0.004)    & (0.008) & (0.005)  \\
Operating costs (TCHF) ($\omega_i$)&      -0.0485*** & -0.0328***    & -0.0476***     & -0.0622***   & -0.0322***  & -0.0399*** &  -0.0305***     & -0.0401***    & -0.0413***  & -0.0453***  & -0.0494***  \\
            &      (0.007)   &   (0.005)      &      (0.007)   & (0.012)     & (0.005) & (0.006)   & (0.005) & (0.006)    &  (0.006)   & (0.006) & (0.006) \\
\emph{Price heterogeneity}&               &               &               &               &    &     &     &     &        \\
\nth{2} wealth quartile ($\phi_2$)  & 0.0036**   & 0.0036** & 0.0036**   & 0.0036**      & 0.0036**   & 0.0036**   & 0.0036** &  0.0036**   & 0.0034**    & 0.0035**  & 0.0036** \\
      0.0036**  	                 & (0.001) & (0.001)  &  (0.001)  &   (0.001)    & (0.001)   &  (0.001)   &  (0.001)   & (0.001)   &  (0.001)   &  (0.001)   & (0.001)     \\
\nth{3} wealth quartile ($\phi_3$)  & 0.0060***  & 0.0060***   &  0.0060***     &  0.0060***  & 0.0060*** & 0.0060*** & 0.0060*** & 0.0060*** & 0.0058***    & 0.0060***     &  0.0060***  \\
                         & (0.001) &  (0.001)  &   (0.001)    & (0.001)   & (0.001) &   (0.001) & (0.001) & (0.001)   &  (0.001)   &  (0.001)   &  (0.001)  \\
\nth{4} wealth quartile ($\phi_4$)  & 0.0248*** & 0.0248***   &  0.0248***     &  0.0248***  & 0.0248***  & 0.0248***  & 0.0248***  &  0.0248*** &  0.0250***   &  0.0259***   & 0.0248*** \\
                     & (0.001)  & (0.001)   &  (0.001)     &  (0.001)   & (0.001) &  (0.001) & (0.001) & (0.001) & (0.001)    &  (0.001)   &  (0.001)    \\
\emph{Rand. Coefficients ($\theta$)} &               &               &               &               &           &     &     &     \\
Price & 0.0134*** & 0.0134***   &  0.0134***     & 0.0133***   & 0.0134*** &  0.0134*** &  0.0127*** &  0.0134*** &   0.0156***  &   0.0150***  &  0.0133*** \\
Operating costs & 0.0023 & 0.0015   &  0.0022     &  0.0022  & 0.0015 &   0.0026  & 0.0017  & 0.0001  &  0.0001   &  0.0014   & 0.0013  \\
\midrule
Estimated average $\gamma$ & 0.678   & 0.454  &  0.657   &  0.853  & 0.446  &  0.558 &  0.449 &  0.561   &   0.509  &  0.417    & 0.527 \\
\midrule
Log Likelihood&  -133,082.92 & -133,079.52   & -133,081.88      & -133,086.68   & -133,078.99 & -133,080.92 & -133,087.82 & -133,081.15  & -133,063.22    &  -133,040.44   &  -132,999.64\\
\bottomrule
\end{tabular}
}

